Controller for electrically-heated flatirons



E. NTHNY CONTROLLER FOR ELECTRICALLY HEATED FLATIRONS April 7, wm

Filed Nov. 29, 1926 M ORINEYS Patented Apr. 7, 1925.

UNITED lSTATES Parar ortica.

CONTRQLLER FOR ELECTRICALLY-HEATED FLATXRONS.

Application tiled November 29, 1220. Serial No. 427,261.

To all whom t may con/em:

Be it known that I, EUGENE AN'rHorvY, a citizen of the United States, and resident .ofnear Seattle, in King County, in the State of Washington, have invented certain new and useful improvements' 'in Controllers for Electrically-Heated Flatirons, oi' which the following is a specification.

My invention relates to electrically-heated latirons, and particularly to the means for controlling the .heat thereof.

The object of vmy invention is to provide n1eanseither permanently connected to the latiron or attachable at will thereto, whereby the heat or the {lat-iron itself will act upon a thermostatic bar or other :control device to cut oli the electric current when the proper temperature is reached.

Another object of my invention is to provide a simple, cheap, and effective form of control device for such flatirons. My invention comprises those novel parts and combinations thereof which are shown in the accompanying drawings, described in the specification, and particularly definer in the claim terminating the same.

ln the accompanyin drawings I have shown my invention in terms which arenowv preferred by Ine. n

Figure 1-1s a plan View or a flatiron, embodying one form of my invention, a part ot' the Vhandle being broken away.

Figure 2 is a perspective View of thel rear.

end of' a Flatiron, illustratingV an alternative embodiment of my invention.

Figure 3 is a longitudinal sectional view through a 'form of thermostatic control member which I prefer to employ.

The latiron itself may be of any suitable or ordinary form. Iii-Figure l l have illustrateda tlatiron' comprising the body l, the rear support 10, the handle l1, and the electric plug l2. ln this form the handle bracket 1B is held in "place by screws lt which are threaded into the body l. My thermo'static control device is secured within a suitable casing 2, which may be formed. as shown in detail in. Figure 3.

In the form shown in Figure l, this caring 2 is provided with a laterally-extending yoke 20, which is adapted to span a screw 14, and to be held thereby against the heatcfl body 1 of the iatiron. In the form shown in Figure 2, the iatiron, instead of having a rear support as inFigure 1, has secured thereto the casing 2, in position to act as the rear support, which in. this case is attached tothe body 1 by suitable fingers 21. two constructions are otherwise alike. In the first instance the thermostatic control device may be detached from the fiatiron at will, while in the second case it is formed as an integral part thereof. y

in the preferred form of my control device, as shown in detail in Figure 3, the casing 2 is enclosed on all sides but one, this side being open throughout its length, or for a considerable ortion thereof. This sidcis intended tol be placed adjacent the heated body 1 of the atiron. Within the casing, and entending adjacent the open side thereof, and the heated body of the iatron, is a thermostatic bar 22 of any suitable construction. This is secured by one end, as'at 23, and .a tired contact point 24 is positioned within thec'asinf spaced therefrom, preferably adjacent the opposite end of the bar 22. lVires 3, in the electric circuit leading to the heating element within the body 1,

are secured respectivel to thebar 22 and to the fixed terininal 24. one terminal of a' switch controlling the suoply of 'current to the heating element, t e two terminals being normally in electrical Contact. y

Means are provided for holding these two terminals normally in contact, and for regulating the amount oft' force required to separate them, in this manner controlling the de gree of temperature required to break the supply circuit. l have shown a screw 25 threaded in the free end of the bar 22, and extending outside of the casing 2, and havf in an insulated head 26 thereon. A spring 27, interposed between the casing 2 and the bar 22, normally holds the terminals in contact, in this case the end of the screw 25 acting as one contact point. B Y adjusting the screw 25 the compression o the spring 27 is varied, thus regulating the temperature required before contact is broken between' the screw and the point 24:.' Contact is broken when the heat of the body 1, coml municated to the bar 22 through the open side of the casing 2, has generated sufficient force in the thermostatic bar. 22 to raise 4it against the force of the spring 27. When this occurs, the supply current to the iron is cut oil", until the body cools `off somewhat. The end-of the casing 2 may be perforated as shown at 28, if desired, to permit inspecm tion of the relative positions of the parts,

The

he bar 22 thus forms culaton theretl'uough. trol member sensitive Y temperature, and .1:1z its maint-L, even Working tcmperaura Anectrczhlly heats hollow membs' ushiugom this 9m 

